Bearings

Sep 21, 2026
Sep 21, 2026
BEHAVIORAL ECONOMICS · 1989/1990 economic model with supporting empirical studies · 1990

Donors Give Partly for the Feeling, Not Just the Cause

Setup. Classical economics predicted that if donors were purely altruistic, a dollar of government funding for a cause should replace exactly a dollar of private giving, since only the total funding should matter to a rational giver. This is the neutrality hypothesis, built on the same logic as Ricardian equivalence.

The finding. Economist James Andreoni's 1989 and 1990 warm-glow model proposed that people are only impurely altruistic: they get a private, non-financial payoff from the act of giving itself, separate from whether the cause gets funded. Multiple independent studies backed this. As the record shows, several of Andreoni's contemporaries simultaneously provided evidence against neutrality-driven crowding-out effects, including Kingma (1989) and Khanna et al. (1995), rebutting the assumption that government grants crowd out private donations dollar for dollar.

Where it stands. The empirical rebuttal of full crowding-out is well replicated and now standard in public-goods economics. The concept's precise psychological mechanism is less settled: Andreoni himself later called the warm-glow term an admittedly ad hoc fix standing in for causes still being worked out.

Wikipedia · Sep 2026
URBAN DESIGN · twenty properly sampled visual-preference surveys · Sep 2026

The Public Prefers Traditional Buildings, Architects Do Not

Setup. Modernist architecture, with its plain facades and exposed concrete and steel, has dominated new building since the 1950s. Critics and supporters have long suspected the public never much liked it, but this was mostly anecdotal until researchers began running visual preference surveys: controlled comparisons where people are shown paired images of buildings and simply asked which they prefer.

The finding. Since 1979, roughly twenty properly sampled surveys have been run across the US, UK, Canada, the Netherlands, Portugal, and Chile. As the piece summarizes, "In every survey conducted, over 60 percent of the respondents have favored traditional architecture, with many revealing over 85 percent support." The preference barely shifts with age, income, politics, or nationality. Architecture students and professionals, by contrast, consistently rate the same buildings in the opposite direction from the general public.

Where it stands. This is measured survey evidence, not architectural opinion, and the pattern has held up as image controls improved: recent AI-assisted studies hold lighting, angle, and context constant between paired images, and the preference for traditional design remains just as strong. What the surveys do not settle is why professional training pulls taste in the opposite direction from everyone else.

Works in Progress · Sep 2026
URBAN SOCIOLOGY · established sociological model with historical and census case data · 1990

Poor Neighborhoods Function Like a Relay, Not a Trap

Setup. Sociologists have long tracked why the same city blocks pass through one immigrant group after another. Ethnic succession theory describes the pattern: newcomers with limited language or savings settle where housing is cheapest, and as a group gains income it moves out, freeing that housing for the next arriving group.

The finding. The chain has run for centuries. London's East End housed Huguenot silk weavers in the 1700s, then Jewish garment workers, and today Bangladeshi Muslims, with the same building serving as church, synagogue, then mosque. In Los Angeles, the pattern shows up in a single decade of census data: the area was 28 percent Hispanic in 1980 and 40 percent by 1990, as Hispanic immigrants moved into what had been a Black neighborhood since the 1940s.

Where it stands. The economic mechanism, cheap housing to income to relocation, is well documented across more than a century of cases. What is not settled is why some successions passed quietly and others, like 1919 Chicago and 1917 East St. Louis, ended in riots.

Wikipedia · Sep 2026
DECISION THEORY · 1953 paradox, replicated in later experiments · 1953

A Simple Gamble Broke Rational-Choice Economics in 1953

Setup. Expected utility theory, the backbone of classical economics, assumes people evaluate a gamble by multiplying each outcome's value by its probability and adding the results. Economist Maurice Allais set out in 1953 to test whether real choices work that way.

The finding. Allais offered two pairs of gambles. In the first pair, one option guaranteed a smaller prize with certainty. In the second pair, both options carried risk. Repeated experiments confirm that when presented with a choice between 1A and 1B, most people would choose 1A. Likewise, when presented with a choice between 2A and 2B, most people would choose 2B. That combination cannot be reconciled with any consistent utility function: no way of valuing money makes both preferences rational at once.

Where it stands. The result has replicated across small stakes, large stakes, and health outcomes, and it motivated Kahneman and Tversky's prospect theory. Researchers still dispute the exact cause: newer work splits the effect between a preference for certainty and a separate aversion to any chance of winning nothing.

Wikipedia · Sep 2026
POLITICAL SCIENCE · quantitative analysis of 1,779 policy outcomes, contested · 2014

Policy Tracks the Preferences of the Richest Voters

Setup. Elite theory holds that power in large societies concentrates at the top regardless of formal democratic process, through control of corporations, foundations, and policy networks rather than elected office alone. It stands against pluralism, the view that competing citizen groups shape outcomes collectively.

The finding. Political scientists tested this directly in a 2014 analysis of 1,779 U.S. policy issues against the preferences of different income groups. Martin Gilens and Benjamin Page concluded that economic elites and business groups have substantial independent influence on policy while average citizens have little or none. Measured by income bracket, the correlation between voter preference and policy outcome told the same story: at the lowest bracket it reached zero, while at the highest it topped 0.6.

Where it stands. This is a measured statistical correlation, not a proven causal chain, and critics reanalyzing the same data found the rich and the middle class actually got their way at closer rates, 53 versus 47 percent, when their preferences diverged. The pattern of unequal influence holds up. How large and how deliberate it is remains argued.

Wikipedia · Sep 2026
Sep 20, 2026
MARKET DESIGN · essayist's historical account, primary-source interviews · Sep 2026

A Toy Economy Produced Real Inflation Overnight

Setup. In 1986, Lucasfilm launched Habitat, the first massively multiplayer virtual world, for Commodore 64 owners on the Quantum Link network. Players controlled avatars, a term the game introduced, and traded an in-game currency called tokens at vending machines and pawnshops, where prices varied by location to feel more lifelike.

What happened. The designers priced the same items differently across machines by mistake. Crystal balls sold for 18,000 tokens at one machine and could be pawned for 30,000 at another. A handful of players spent hours shuttling between the two, buying low and selling high. As designers Chip Morningstar and F. Randall Farmer later wrote, "Each wound up with hundreds of thousands of tokens, quintupling Habitat's money supply overnight."

Where it stands. This is a single, well-documented case from the system's own creators, not a repeated experiment, but the mechanism it exposes is general: any market that lets people move freely between differently priced venues creates an arbitrage opportunity, whether the currency is real or a token in a toy economy. The same dynamic still shows up in video game and crypto economies whenever a design team forgets to keep prices synchronized.

Virginia Postrel · Works in Progress · Sep 2026
POLITICAL THEORY · a dissident insider's political argument, 1957 · Sep 2026

A Communist Insider Named The Party's New Ruling Class

Setup. Milovan Đilas was a senior Yugoslav communist official and a wartime ally of Tito who broke with the party in the 1950s. He wrote The New Class from inside the system he was criticizing, finishing the manuscript before his 1956 arrest, after which he served nine years in prison, including 22 months in solitary confinement.

The argument. Đilas argued that the communist party bureaucracy had become a new ruling class, not through legal ownership of property but through control over it. As he put it, "Ownership is nothing other than the right of profit and control. If one defines class benefits by this right, the Communist states have seen, in the final analysis, the origin of a new form of ownership or of a new ruling and exploiting class."

Where it stands. This is a firsthand political argument from someone who held power inside the system, not a statistical study. The book was banned in Yugoslavia until 1990, circulated on the black market, was translated into 50 languages, sold over 3 million copies, and was read by Mao Zedong and Che Guevara. Its core claim, that control over assets is a form of ownership regardless of legal title, is still used to analyze bureaucratic power well beyond communist states.

Milovan Đilas (1957), via Wikipedia · Sep 2026
SOCIOLOGY · founding statistical sociology study, 1897 · Sep 2026

Durkheim Traced Suicide To Social Bonds, Not Despair

Setup. In 1897, the French sociologist Émile Durkheim published Suicide, an attempt to explain rates of suicide as a social fact rather than a purely individual, psychological one. He defined the term broadly, as any death resulting from an act the victim knew would cause it.

The finding. Durkheim proposed four types of suicide, driven by two forces: how integrated a person is into a community, and how tightly society regulates their desires. Egoistic suicide comes from too little integration, altruistic from too much, and anomic from too little regulation during sudden social or economic upheaval. He backed the theory with data: "after war broke out in 1866 between Austria and Italy, the suicide rate fell by 14 per cent in both countries."

Where it stands. This is a founding statistical study in sociology, and it still shapes how suicide is studied, but its specific claims have been challenged. Critics have argued Durkheim committed an ecological fallacy by drawing conclusions about individuals from aggregate rates, and that his Protestant-Catholic comparison reflected differences in how deaths were recorded rather than real differences in social cohesion. The four-part framework remains influential in control theory even as the religion finding is contested.

Émile Durkheim (1897), via Wikipedia · Sep 2026
GAME THEORY · replicated experimental game, real contest data · Sep 2026

A Guessing Game That Measures How Deep You Think

Setup. In 1981, a French magazine editor needed a tiebreaker for readers tied on points. He asked thousands of them to guess a number equal to two-thirds of the average guess. The game became a standard tool for measuring how many steps ahead people actually reason.

The finding. Perfectly rational players who expect everyone else to be rational too converge on zero: any guess above two-thirds of the maximum possible average is never a good bet, and eliminating those guesses repeatedly drives the equilibrium down to zero. Real players stop reasoning after two or three steps instead of the roughly 21 steps needed to reach zero. In a large contest run by a Danish newspaper, the average guess was found to be 33, out of 19,196 participants.

Where it stands. This is a well-replicated experimental finding, not a one-off curiosity, run across student groups, online contests, and even professional traders. Even economics graduate students rarely guess zero. The game remains a standard classroom demonstration of the gap between individual rationality and the common knowledge of rationality a true equilibrium requires.

Alain Ledoux (1981) and Rosemarie Nagel (1995), via Wikipedia · Sep 2026
PSYCHIATRIC EPIDEMIOLOGY · contested epidemiological studies, named researchers · Sep 2026

Mental Illness May Cause Poverty, Not The Reverse

Setup. Mental illness is strongly correlated with lower social class, but the causal arrow is disputed. The drift hypothesis holds that developing a mental illness causes someone to fall down the occupational ladder. The competing social causation thesis holds that being in a lower class raises the risk of becoming mentally ill in the first place.

The finding. Researchers E. M. Goldberg and S. L. Morrison studied men admitted to a mental hospital for a first schizophrenia diagnosis between ages 25 and 34, comparing their occupations with those of their fathers. If poverty caused the illness, the men should have been born into disadvantaged families. Instead, "they found the men had grown up in families whose social class was similar to the general population," meaning the drop in status came after the illness appeared, not before.

Where it stands. This debate remains open. A 1990 review by John Fox found that many studies supporting the drift hypothesis rested on methods that "lacked empirical support," and unemployment itself is separately shown to raise the risk of depression, which favors social causation. Both mechanisms likely operate, and the balance between them remains unresolved, and probably differs across illnesses.

E. M. Goldberg and S. L. Morrison, via Wikipedia · Sep 2026
Sep 19, 2026
POLITICAL SCIENCE · academic study, quantified model · Sep 2026

Civil War Violence Tracks Who Controls The Ground

Setup. Civil wars look chaotic, full of massacres that seem to defy strategy. Political scientist Stathis Kalyvas rejected the idea that this killing is blind ethnic hatred. He treated it instead as a calculation both fighters and civilians make under uncertainty about who can be trusted.

The finding. Kalyvas argues violence peaks in territory under near-hegemonic control, where one side dominates but does not fully control the ground. There, informers face little risk of retaliation, so denunciations flow freely and fighters use targeted, selective violence. In fully contested or fully controlled zones, violence turns indiscriminate or disappears entirely. Testing this against the Greek Civil War, the model predicted two thirds of the regional variation in violence.

Where it stands. This is a tested, quantified model built on game theory, not a historical anecdote. Reviewers call it one of the most influential works on political violence, and later scholars applied it well beyond Greece. The main criticism is that it explains local tactics well but says less about the war's larger strategic aims.

Stathis N. Kalyvas, Cambridge University Press (2006), via Wikipedia · Sep 2026
MORAL PHILOSOPHY · 1714 satirical argument, foundational to economics · Sep 2026

A 1714 Poem Argued Vice Builds Public Wealth

Setup. In 1714, the Anglo-Dutch philosopher Bernard Mandeville published a satirical poem about a beehive. It scandalized eighteenth-century Europe by arguing that the virtues people preach in public are not what actually build a prosperous society.

The argument. In the poem, a hive of bees thrives on luxury, vanity, and self-interest, then the bees suddenly turn virtuous and stop wanting more than they need. Trade collapses, industry stalls, and the hive retreats into a hollow tree. Mandeville's larger claim was that society is bound together not by shared virtue but by the tenuous bonds of envy, competition and exploitation. Vices like luxury and vanity, he argued, are what actually employ tradesmen, lawyers, and craftsmen.

Where it stands. This is a philosophical argument, not a measured result, and it caused a real uproar: a grand jury denounced the book, and both Rousseau and Adam Smith wrote rebuttals to it. Its core insight, that self-interest can produce unintended public benefits, fed directly into the division-of-labor and free-market ideas that followed it.

Bernard Mandeville, "The Fable of the Bees" (1714), via Wikipedia · Sep 2026
POLITICAL ECONOMY · academic argument, widely cited theory · Sep 2026

Small Groups Beat Big Majorities By Free-Riding Less

Setup. In a democracy, the obvious fear is that the majority tyrannizes the minority. Economist Mancur Olson argued the opposite happens more often: small, organized groups routinely beat large majorities, even when the majority has far more to gain.

The argument. Olson's mechanism is the free-rider problem. In a large group, each member gains only a small personal share of any collective benefit, so nobody has much incentive to bear the cost of organizing. Small groups face lower coordination costs and a larger reward per member, so they act while large groups stay passive. Economist Susanne Lohmann later quantified the cost of this pattern: the U.S. sugar import quota generated 2,261 jobs while reducing overall welfare by $1.162 billion, an implicit cost of over $500,000 per job.

Where it stands. The free-rider logic is now a settled building block of political economy, still used to explain lobbying and farm subsidies. Critics argue Olson's model assumes a cost structure that does not hold for every public good, and that diffuse interests can still win once they gain enough legitimacy to mobilize.

Mancur Olson, "The Logic of Collective Action", Harvard University Press (1965), via Wikipedia · Sep 2026
COGNITIVE SCIENCE · academic argument, widely cited rebuttal · Sep 2026

Genes Probably Don't Encode Grammar Rules Directly

Setup. Linguists Noam Chomsky and Steven Pinker argued that children are born already knowing the abstract rules of grammar, hard-wired before any language reaches their ears. In 1996, six cognitive scientists led by Jeffrey Elman published Rethinking Innateness to test whether that claim is biologically plausible.

The argument. Elman et al. argue that information concerning something as specific as grammatical rules (which they classify as propositional information) could only be encoded as pre-specified "weights" between neurons in the cortex, and evidence on brain plasticity, the brain's ability to change its wiring during development, shows information is not hard-wired this precisely. Instead, genes set a brain's architectural constraints, its physical structure and learning algorithms, and specific rules like grammar emerge only once that structure meets real language.

Where it stands. The book has been cited about 4,000 times and named among the 100 most influential works in twentieth-century cognitive science, and its constraints idea shaped later models such as Mark Johnson's Interactive Specialization hypothesis. The nativist-versus-connectionist debate stays unsettled: this shifts where innateness sits rather than closing the question.

Wikipedia, on Elman et al.'s "Rethinking Innateness" (1996) · Sep 2026
LABOR ECONOMICS · academic argument, econometric estimate · Sep 2026

College Mostly Signals Skill, Caplan Argues, Not Builds It

Setup. Governments subsidize education on the assumption that classes make workers more productive. Economist Bryan Caplan built a 2018 book-length case that this human-capital story is mostly wrong, and that school mainly certifies traits employers already value.

The argument. Caplan's signaling model says a diploma tells employers a graduate is intelligent, conscientious, and conformist, regardless of what was actually taught. His evidence: adults forget most of what they studied outside their career, dropouts who complete nearly a full degree see little income gain until the day they get the sheepskin, and skills rarely transfer between subjects. Weighing these signs, Caplan estimates that roughly 80 percent of the return to education comes from signaling, with the rest from real skill gained.

Where it stands. This is a single economist's book-length argument built on existing research, not a new experiment, and it remains contested. Reviewers call the case strong even when they reject the 80 percent figure. Caplan's policy conclusion, cutting education subsidies, draws more pushback than his diagnosis of why school pays.

Bryan Caplan, "The Case Against Education", Princeton University Press (2018), via Wikipedia · Sep 2026
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